Cuando usar Venus Phases (Galileo) 3D Explorer

Use this explorer when you want to see why Venus phases proved heliocentrism, and skip it when you want the Moon phases or a transit.

• Explaining why Venus shows a full set of phases
• Linking the phase to the changing apparent size and distance
• Showing the 1610 Galileo evidence against the Earth-centred model

This is an educational visualization with compressed orbits and sped-up motion.

Walk the controls in the step-by-step guide, or compare options in vs alternatives. Open the Venus Phases (Galileo) 3D Explorer.

Last updated: Jul 21, 2026